D-38 artillery tank was created in the USSR in 1931-32. It differed from the serial BT-2 tank in the new turret of the constructor N. Dyrenkov, which carried a 76 millimetre cannon and a 7.62 millimetre machine gun. The ammunition supply consist of 50 rounds and 2700 cartridges. This construction went through the probation tests, but due to a number of disadvantages was not put in a quantity production. Basing on this machine a known artillery BT-7A tank was designed developing more perfect artillery tanks BT-7A.